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The textbook presents the basic concepts of discrete mathematics to the extent required by the discrete mathematics curricula for computer science students. It presents elements of mathematical logic, recurrence relations, elements of set theory, basics of combinatorics and graph theory. The material presented is based only on school courses in mathematics and computer science. Each section of the textbook contains a selection of problems, the solution of which will contribute to a better understanding of the theoretical material.

The book is intended for first-year students of higher education institutions studying in the field of Computer Science and the discipline Discrete Mathematics.